<!DOCTYPE html>
<html lang="zh-cn">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- <script src="js/vue.js"></script> -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>

<body>



    <div id="app">
        <div>
            {{msg}}
        </div>
        <div v-html="msg"></div>
    </div>

    <script>
        var app = new Vue({
            el: "#app",
            data: {
                msg: "<h3>hello vue</h3>",

            }
        })
    </script>
</body>

</html>